12 4/5 feet scaled to 1/4 inches = 5 feet

If 1/4 inches =5 feet, than 1 inch =20 feet.

Now divide 12.8 by 20

=0.64

0.64 inches

No would be 3.2 ft because 12 4/5 feet equals 12.8. 1/4 equals .25. 12.8 multiplied by .25 equals 3.2 feet.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft